They aren't nearly as expensive as some of the more pricey Black Mythics like Liliana of the Veil or Mikaeus, the Unhallowed, yet they can impact games arguably in even more powerful ways
THERE WAS A BUYING LIMIT OF 2 PER PERSON AT THE POKEMON CENTER
Every Promo Card in Pokemon TCG Pocket is listed here, as well as how to get them, and which cards have since become unobtainable now that the events that allowed you to get them have ended
You can disguise it and flip it to get the token generation started, or hard cast it for cheaper
The purple tones shift and shimmer in a way that creates the impression that Gengar is actually moving within the card, sliding between dimensions in the way that Ghost-type Pokemon are said to do
Those cards will be released in monthly batches, starting with the Sword and Shield starters in March, and ending with the Red and Blue starters in October